Ratchet-drill.



e. W. FIGG. RATOHET DRILL. APPLICATION FILED NOV. 21, 1908' Patented Nov. 30, 1909.

INVENTOH Guy 74! By .Illlllkx WITNESSES A TTORNE Y8 UNITED STATES PATENT OFFICE.

GUY WILLIAM FIGG, OF LOS ANGELES, CALIFORNIA, ASSIGNOR OF ONE-HALF TO FRANCIS P. DUNCKLEE, OF LOS ANGELES, CALIFORNIA.

RATCHET-DRILL.

T 0 all whom it may concern:

Be it known that I, GUY W. FIGG, a citizen of the United States, and a resident of Los Angeles, in the county of Los Angeles and State of California, have invented a new and Improved Ratchet-Drill, of which the following is a full, clear, and exact description.

This invention relates to ratchet drills, and more particularly to a device of this class which is provided with a support, the latter being automatically lengthened as the drill is advanced into the work.

The object of the invention is to provide a device of the class described, simple and serviceable in construction and inexpensive to manufacture, which is constructed to obviate the danger of the supporting point and its advancing member being unscrewed too far and thus causing an injury to the device.

Reference is to be had to the accompanying drawings forming a part of this specifition, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a plan view of an embodiment of my invent-ion, showing parts in sect-ion. Fig. 2 is a cross section on the line 2-2 of Fig. 1, and Fig. 3 is a longitudinal section of a modified form of support.

In the specific form shown in the drawings, I provide a drill or ratchet head 1, having a ratchet 2 integral therewith, and a handle 3 on which is arranged a dog 4, the latter serving to engage the ratchet 2 to rotate the drill head. At the side 5 of this head is an opening 6 which receives the end of an ordinary drill. Rigidly secured to the side 7 of the head is a shank 8 provided with a bore 9. The latter has its upper portion of greater diameter than the remainder so that an annular shoulder 10 is formed, for a purpose to be hereinafter described. Movably carried on the shank 8 is a hollow sleeve 11 having its upper edge 12 reduced and threaded to receive a correspondingly threaded portion 13 of a cap 14. The cap is provided at its top with an opening 15 which removably receives a supporting point 16, the latter having its outer end 17 tapered. The cap further has a transverse opening 18 whlch intersects the axial opening 15. The supporting point further has an opening 19 which, when the device Specification of Letters Patent.

Application filed November 21, 1908.

Patented Nov. 30, 1909. Serial No. 463,754.

is in use, is brought in register with the opening 18 of the cap, so that a pin 20 may be passed through these registering openings to hold the supporting point firmly in place. Integral with the supporting point is an advancing member 21, preferably in the form of a feed screw, the latter extending into the bore 9 of the shank 8.

Arranged about the lower end of the advancing member, and secured to it by means of a screw or rivet 21 having heads 22, is a guide collar 23. Adapted to be received by the bore 9 and to close the same, is a crown 24, the latter having a portion 25 extending out of, and over, the upper edge of the bore. The lower portion 26 of the crown rests against the shoulder 10 formed in the wall of the shank 8. The crown further has a threaded opening 27 extending therethrough, which receives the advancing member 21. Located in the wall of the shank 8 is a threaded opening 29 which receives a set screw 30, the latter extending into a recess 31 in the crown 24 to hold the latter in place so that the advancing member cannot be unscrewed too far, as the guide collar 23 will come into engagement with the lower portion 26 of the crown and thereby will limit the advancement of the supporting point.

When it is desired to separate the device into its component parts, the cap 14 is held firmly while the sleeve 11 is unscrewed until these two members become separated one from the other. It is then easy, after the set screw has been removed, to withdraw the cap and the advancing member which is secured thereto by means of the pin 20, from the remainder of the device. If necessary, the pin 20 can be driven out of the opening and the supporting point released.

In the modified form shown in Fig. 3, I employ a shank 32 having a bore 33, the latter having its upper part 34 constricted and threaded. Movably carried on the shank 32 is an end member 35 having a portion 36 reduced and suitably threaded to receive a correspondingly threaded portion 37 of a cap 39. The latter has an opening 40 at its top from which a supporting point 41 projects, the latter having a threaded advancing member 42 preferably integral therewith and extending into the bore 33 of the shank 32. The cap 39 further has a transverse opening 42 which intersects the opening 40. The supporting point has an the nut to the shank, a feed screw threaded 20 opening 43 which can be brought in register with'the opening 42* in the cap, so that a removable pin 44 may be used to secure the supporting point firmly in position. The shank has its upper end 45 constricted and threaded to receive a correspondingly threaded guide collar 46. A set screw 47 is adapted to fit into an opening 49 to firmly lock the collar in place on the shank.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

A ratchet drill comprising a hollow shank having an opening for receiving a drill, means for intermittently rotating the shank, the outer end of the shank being screw threaded, a nut engaging the threaded portion of the shank, a set screw for securing through the nut and having its outer end provided with a point, a cap inclosing the outer end of the shank and provided with an opening through which extends the point, said cap and point being provided with registering openings, and a pin passing through the openings for detachably connecting the cap with the point, and a sleeve having a threaded connection with the cap and incl0s ing the shank.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GUY VVILLIAlVL FIGG.

lVitnesses CHARLES D. JACKSON, EMILY F. JACKSON. 

